Question 55

The pie chart given below shows the number of laptops sold of each of 7 different brands in a year as percentages of the total number of laptops sold of all these 7 brands taken together in that year.

What is the difference between the measures of the central angles made by sector B2 and sector B5?

Solution

total number of laptops sold of all these 7 brands taken together = (16+22+8+20+18+6+10)%

100% = 360$$^{\circ\ }$$

1% = 3.6$$^{\circ\ }$$

Difference between the measures of the central angles made by sector B2 and sector B5 = (22-18)% = 4% = $$4\times3.6^{\circ\ }$$

= 14.4$$^{\circ\ }$$

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